Hey swega, i take it your 3clickdead? anyway as for help with this mod...
* Make ONLY hobos and/or mental patients spawn.
* Make sure that the so called "zombies" only use the nerd,mental patient or old lady animations.
* Make sure that the hobos (if they will be included) can't hold down Jimmy to the ground.
* Have a few cars lying around (it gives the sensation of chaos).
* Make sure that the "zombies" can't use any weaponry.
* Like I said only "zombies" spawn, that means NO cops, cliques, carnies, adults, prefects, teachers.
1) possible by editing ide.img and trigger.img (canceling out the yyyy's for every skin)
view this excellent tutorial for the trigger editing
http://bully-board.com/index.php?topic=14622.02 + 3) possible by changing the chosen peds/zombies fighting styles
4) changing spawned items on the ground to vehicles in trigger (these can be picked up but disapear) thanks to madman for this find and possibly changing the co-ords for custom locations (havn't tried but i'm sure it will work)
5) I think the pedstats file determins who spawns with what weapon, but this shouldn't be a problem as these peds dont spawn with any weapons anyway
6) same answer as 1 just null all the yyyy's to 00's in hxd and this will stop the skin appearing in free roam.
i'll get to writing up a few tuts soon, just waiting on a friend to finish a job